The Chek-Mate from DeSantis is a patented plain clothes holster developed with law enforcement and licensed civilian carry in mind. The Chek-Mate features the patented Redi-Lok system which combines superior retention with proper draw fundamentals. The holster is self locking and requires your thumb to be in proper shooting grip in order to draw the firearm. It is very instinctual and requires very little practice. The holster fits up to 1.75" belts.